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Priority to JP17659180UpriorityCriticalpatent/JPS5798852U/ja
Priority to US06/304,188prioritypatent/US4406551A/en
Priority to DE3138008Aprioritypatent/DE3138008C2/de
Priority to GB8130997Aprioritypatent/GB2088780B/en
Priority to FR8121180Aprioritypatent/FR2495547A1/fr
Publication of JPS5798852UpublicationCriticalpatent/JPS5798852U/ja